construction of a concrete footing

for a major piece of equipment in

a processing plant.

Additional information and

frequently asked questions (FAQ)

have been included in the second


Quantity measurement and units

to be in accordance with AS


Information to plan a project comes in many forms. For instance, it may be in the form of

all inclusive (or all up) hours per m3 concrete. That type of rate would include the total

hours of labour to place reinforcement and concrete (e.g. steel fixing, pouring and

finishing concrete etc.).

In assessing the number of hours required to perform a task you need to calculate the

production rate for a crew and then multiply by the number of crew (and in pricing by

each paid labour rate) to calculate the work hours for the activity.


If a concrete pump capacity is 50 m3

/hr and the pour size is 475 m3


Then it takes 9.5 hours to pour the concrete.

For a crew of 4 labourers the work hours are 9.5 x 4 = 38 work hours

Similarly we need to set up team or crew structures for formwork or any other task

involving both labour and material.

You are the project engineer responsible for constructing the concrete footing for a major

piece of equipment in a process plant:

Width 6 m

Length 10 m

Depth 1.8 m

Underside of footing (top of blinding) is 1.5 m below existing ground level


▪ 50mm of blinding concrete (to trim and level base of foundation and provide clean

working area for trades to erect formwork and fix reinforcement)

▪ After 2 days curing of the blinding concrete pedestrian access and erection of

formwork on can commence

▪ 1.2 m of working space around the footing and a 45o batter to the earth sides

▪ Formwork is required on each of the vertical faces of the footing

▪ Reinforcement is approx. 140 kg / m3 of concrete

▪ Allow for 25% bulking of excavated material

▪ Formwork to remain in place for 7 days after concrete pour for concrete to part cure

▪ After stripping formwork, backfill to existing level in 300mm layers

▪ The concrete for the footing must be poured in a single pour.

For the purposes of this exercise ignore any requirements for heat dissipation

during such a large continuous mass concrete pour.

You have the following plant available:

• 20T excavator with 0.9m3 bucket that can excavate this material at 40 m3 per hour

and will need an operator and a labourer to trim the excavation.

• Sufficient trucks to keep up with the excavator

• Vibrating plate compactor that can compact fill material (to 100% modified

compaction) at the rate of 20 m3

/hour delivery and spreading by the 20T excavator.

• A concrete pump with a capacity of 25 m3


What You Need to Do:

1. Define the activities required to construct and backfill around the footing.

2. Calculate the quantities of work for each activity. Use units of measure as specified in

AS1181-1982 Method of Measurement of Civil Engineering Works etc. (available online through Swinburne Library).

3. Determine the work hours required to complete each activity. Note that any activity

must have a minimum of two for safety, with typically 4 to 6 workers in a crew

Kemahiran: Kejuruteraan Awam, Kejuruteraan Struktur, Kejuruteraan Bangunan, Kejuruteraan, Penjadualan Projek

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Tentang Majikan:
( 539 ulasan ) Bangalore, India

ID Projek: #21420851

Dianugerahkan kepada:


if you could provide me with a version of AS 1181-1982, i will be able to help you. feel free to contact me Best Regards, Moustapha N.

₹2000 INR dalam 2 hari
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Hello, I have done my masters degree in Structural Engineering at UNSW, Sydney. I have more than 4.5 years of work experiences in India and Australia. I have also done projects for countries like China, Iraq, Hong Kong Lagi

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Hi... I am a civil engineer (master of structural engineering) I understand your description and your order (planning and design of footings) Regarding Budget and Time, we can negotiate please send me a message now so Lagi

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Hello, I am a structural engineer who has experienced in steel detailing more than 3 years. Let me show you similar projects that I have done before like you were specified. Then you will decide to choose me. Thank you Lagi

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Respected Sir/Mam, The project will be done as per your proposal with exact values and duration. Regards, Karthik

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